The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 288
he ordinary methods of manufacturing such taper bars, the cen-tres of the compressing rollers are maintained at the same distancapart during the whole of the process of rolling; the requisitetaper being given to the bar rolled by eccentricity of the groovesor their depth below the surface of the… … rfi
Architecture · Civil engineering · Science
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